查询词典 flashover

New technology of silicone rubber anti-pollution-flashover is an effective measure to antipollution reconstruction for transformer substation.

0前言对于电力系统耐污闪的研究来说，调整爬距一直以来都是电力系统耐污闪的一个重要措施。

In the flashover zone, an unstable point can be obtained from the characteristic curve and differential coefficient curve of the potential function.

在轰然区，可利用势函数的特性曲线和微商图得出火灾的不稳定点，再由不稳定点取值计算轰燃发生时热烟气层的温度。

It analyzes the effects of the pollution severity and the altitude or atmospheric pressure on the flashover voltage or the flashover gradient. It is shown that FOV is determined by the configuration, and the insul...

结果表明：合成绝缘子的污闪电压与伞裙结构有密切关系；在同样的最短干弧距离下，简单伞形结构的合成绝缘子具有更高的污闪电压和污闪梯度，对于伞形结构复杂的合成绝缘子，虽然其爬电距离提高了，但其污闪电压没有明显提高；高海拔下合成绝缘子的气压影响特征指数n大于瓷和玻璃绝缘子，并受伞裙结构形式、污秽程度的影响，且随着污秽程度增加，n逐渐减小，此外，染污方法和方式对n也有一定影响但不明显。

Laboratory investigations on the flashover performances of polluted five types of typical porcelain and glass insulators were carried out in the climate chamber. Based on the test results, this paper analyzes and calculates the flashover voltage, the voltage gradient and the valid creepage distance of the five types of insulators.

为此在人工雾室中对5种典型结构的瓷和玻璃绝缘子的污闪特性进行了试验研究，根据试验结果分析和计算了5种典型绝缘子的闪络电压、闪络电压梯度、有效爬电系数。

Tests were carried out using ±1 000 kV simulation tower in this paper, and switching impulse and lightning impulse flashover characteristic curves of typical air gap in ±1 000 kV transmission tower were obtained. These curves were compared with test results of ±500 and ±800 kV air gap, and the flashover characteristic of 750 kV AC transmission tower and square tower window were also discussed in this paper.

利用±1 000 kV模拟塔头进行试验，得到了±1 000 kV杆塔典型空气间隙的操作冲击和雷电冲击放电特性曲线，并与±500和±800 kV杆塔塔头的空气间隙研究成果进行对比分析，同时结合750 kV 交流杆塔塔头和正方形塔窗的操作冲击特性进行了讨论和分析。

At present, most related researches are performed in artificial simulation environments. On the basis of theoretical analysis, a pollution flashover model under high altitude is proposed and the AC pollution flashover performance of standard suspension insulator XP-70 is tested and researched in the high altitude sites.

目前大多数研究是在人工模拟条件下进行的，文章通过理论分析提出了高海拔条件下的污闪模型，并在高海拔现场试验研究了标准悬式绝缘子XP-70的交流污闪特性。

The pollution flashover accidents take place sometimes in power system and the loss because of which is large, So it is significant to study deeply the pollution flashover performance and DC discharge model of long insulator string at high attitude.

电力系统污闪事故时有发生，且所造成的损失是巨大的，因此深入开展低气压下绝缘子串污闪特性及直流放电模型研究具有重要的学术意义和工程应用价值。

The flashover performance of ice-covered XZP-210 insulator string s was investigated and the effects of the string length and arrangement on the icing flashover voltage were analyzed.

该文在人工气候室模拟高海拔和覆冰环境，试验研究了XZP-210直流绝缘子串在轻覆冰时的冰闪特性，分析了冰闪电压与串长和布置方式的关系。

According the result of experiment, the air pressure have effect on flashover voltage, the relationship of the flashover voltage and the number of insulator is linearity, and the change of potential distributing after insulator iced is the main reason why the outer insulation characteristic of iced insulator string declined.

试验研究结果表明，气压对覆冰绝缘子长串的闪络电压影响的特征指数与污秽绝缘子一致，覆冰可认为是一种特殊的污秽形式；在试验研究的串长范围内，闪络电压与串长成线性关系；绝缘子串覆冰以后的电位分布的变化是覆冰绝缘子串外绝缘特性下降的主要原因，但覆冰绝缘子串的局部电弧发展成完全闪络所需的时间比污秽绝缘子长，且受冰层的融化和冰凌状态的影响严重。

In the wind environment with and without dust, the flashover voltage of flat plate model, Uf, increases with the increment of the wind. This increase trend becomes slow when the wind increase to be 4.5m/s. Also, the influence of the charge of sand dust on Uf is small. In the condition of sand dust deposited on flat plate model, there is a minimum value of Uf with the increase of the density of the deposited sand dust. Besides, the flashover voltage of the dust is influenced by the moisture of the dust.

得到了风沙速度、风沙带电量、沙粒沉积量及沙粒含水量等因素对沿面放电的影响规律；在有风有沙和有风无沙时，平板模型沿面闪络电压Uf随风速的增大而增大，当风速达到4.5 m/s后增大趋势变缓；Uf受沙尘的电荷量影响较小；当干沙粒沉积在绝缘表面时，随着沉积密度的增加，Uf存在着极小值；同时，平板模型的闪络电压还与沉积沙粒的含水量有关。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。